AAE450 Spring 2009 Time to Complete 50m/s ΔV & 100g Payload System Overview Brittany Waletzko 100g Payload Integration Manager Translunar/OTV Phase Week 9 Brittany Waletzko - ATT

AAE450 Spring m/s ΔV Maneuver (Requirement)  t = ΔV m T  T = instantaneous thrust (assumed constant over interval)  m = instantaneous mass (assumed constant over interval)  Calculated using four thrusters, pointed parallel to axis of symmetry (as per current configuration of 12 thrusters on each lander) Brittany Waletzko - ATT 100g10kgArbitrary Total Wet Mass (kg) Thrust per thruster(N) Time for deltaV (s) Time for deltaV (min) ΔV = ʃ T/m dt = 50 m/s

AAE450 Spring g Payload System Brittany Waletzko - ATT Mass (kg) Net Power (W) Cost ($) TLI Prop $1,095,100 TLI Comm0-31 TLI ATT (see LD cost) TLI STRC/THM $100 TLI Pow $3,647,260 TLI $4,742,460 LD Prop LD Comm $295,500 LD ATT $400,000 LD STRC/THM $50,029 LD Pow $314,500 LD $1,060,029 Mass (kg) Net Power (W) Cost ($) Loco Prop Loco Comm0.94-6$21,700 Loco PL0.1 Loco Vibe Loco STRC/THM Loco Pow0.213 Loco (1) $21,700 Total in LEO $5,845,889 (Continued)

AAE450 Spring 2009 Questions? Brittany Waletzko - ATT

AAE450 Spring 2009 The Scenario Brittany Waletzko - ATT  OTV: consists of TLI main engine, power system, reaction wheels, four attitude thrusters, and lander (containing two loco spheres)  Running during TLI: main engine, some attitude control, power system, heater, communications  Lander: prop system, comm, attitude sensors and 12 thrusters, thermal system, power system, two loco spheres  Locomotion: drive system, comm, payload, battery

AAE450 Spring 2009 Current 100g Integration Sheet Brittany Waletzko - ATT (see attached two pages)